Matthew 26:8: But when His disciples saw it, they were indignant, saying, “Why this waste?

Mark 14:4: But there were some who were indignant among themselves, and said, “Why was this fragrant oil wasted?John 12:4-5: But one of His disciples, Judas Iscariot, Simon’s son, who would betray Him, said, “Why was this fragrant oil not sold for three hundred denarii and given to the poor?”

Matthew says that all of the apostles were indignant, but Mark says that only some of the apostles were indignant, and John says that only one of the apostles were indignant.

Contradictions:1. All of the apostles were indignant != Only some of the apostles were indignant.2. All of the apostles were indignant != Only one of the apostles was indignant.

(Solving: 1 and 2)

Mark and John only mentioning that some of the apostles were indignant doesn't exclude there being more.

Yes, but it's implied by the wording used: "there were some who were indignant", "But one of His disciples […] said, 'Why was this fragrant oil not sold […]"